- U.S. politician: the first Black mayor of a major U.S. city (Cleveland, Ohio, 1967–71).
- British inventor and engineer.
- British physicist and mathematician, born in Ireland.
- the cgs unit of kinematic viscosity, equal to the viscosity of a fluid in poise divided by its density in grams per cubic centimetre. 1 stokes is equivalent to 10 –4 square metre per second
